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CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 200–269) > PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS > SUBPART B—Boilers and Appurtenances (§230.23 to §230.65) > 230.35—Pressure testing.
230.35—Pressure testing.
The temperature of the steam locomotive boiler shall be raised to at least 70 deg. F any time hydrostatic pressure is applied to the boiler.